spi: sh-msiof: drop unneeded MODULE_ALIAS

The MODULE_DEVICE_TABLE already creates proper alias for platform
driver.  Having another MODULE_ALIAS causes the alias to be duplicated.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210916164423.134603-2-krzysztof.kozlowski@canonical.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/spi/spi-sh-msiof.c

@@ -1426,4 +1426,3 @@ module_platform_driver(sh_msiof_spi_drv);
 MODULE_DESCRIPTION("SuperH MSIOF SPI Controller Interface Driver");
 MODULE_AUTHOR("Magnus Damm");
 MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:spi_sh_msiof");